/*
 * @Author: 古华
 * @Description: 请为你的组件添加相关描述
 */
(function (doc, win) {
  let docEl = doc.documentElement,
    resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',
    recalc = function () {
      let clientWidth = docEl.clientWidth
      if (!clientWidth) return
      docEl.style.fontSize = 50 * (clientWidth / 375) + 'px'
    }

  if (!doc.addEventListener) return
  win.addEventListener(resizeEvt, recalc, false)
  doc.addEventListener('DOMContentLoaded', recalc, false)
})(document, window)